Sand-drier



l UNITED STATES Pa'rniwr CFF-ICE.

VILLIAM YV. CLARK, OF CHICAGO, ILLlNOIS.

SAND-DRIER.

SPECIFICATION forming part of Letters Patent No. 278,883, dated June 5, 1883.

Application filed January 29,1883. (No model.)

cago, in the-county of Cook and State of Illi nois, have invented certain new and useful Improvements in Sand-Driers, of which t-he Y following is a full, clear, and exact descrip-V tion, sufficient to enable others skilled in the art to which my invention appertains to make and use the same.

My present invention has for its object to provide an apparatus for drying sand and like material, which shall be simple and durable in its parts, shall be of such construction that thc heat of the fuel will be most economically and effectively applied, and in which the drying operation will be quickly and thoroughly accomplished. p

A further object of invention is to furnish means whereby the same apparatus may be used for drying bot-h sand and gravel.

These objects of invention I have accomplished by the mechanism hereinafter described, particularly pointed out in the claims, and illustrated in the accompanyin drawings, in which- Figure l represents a view in side elevation, parts being' broken away for better illustration. Fig. 2 is a view in transverse vert-ical section. Fig. 3 is a view in front elevation, and Fig. -;L is a plan view, of the drier. Fig. 5 is a detailed sectional view.

t A designates the baseof the drier, which is supported upon suitable legs, and consists of an oblong casting havingI a flanged bottom, a, and an open front which abuts against and is securely bolted to the face-plate B, provided at its lower portion with the door a, for the withdrawal of ashes, and centrally with the fuel-charging door b.

Upon the inner side of the base A are formed the end lugs, and the broad central lugs, c, which serve to sustain the ends of the gratebars A, formed of two separable parts, as shown. The grate-bars A are located at a slight distance below t-he top of the casting, so that the flame and heat of the burning fuel will be more effectively applied to the base of fuel banked against the bottom of the dome would prevent the uniform and perfect heating of the same. i

The dome C, which constitutes the top of the fuel-chamber, is preferably formed of plateiron with inclined back c and broad inclined sides c', the abutting edges of the back and sides being bolted firmly together, as shown. The front ends of the sides ct within grooves formed in the lugs b3, cast upon the rear side of the face-plate, and a constantly-tight joint is thus secured between the face-plate and the dome. A space is cut in the upper portion of the back ofthe dome, around which is bolted a casting, C, shaped substantially asshown, to which will be fitted the smoke-pipe of the fuel-chamber. The bottom edge of the dome C rests within the groove or channel' d at the lower portion of the rim D, which extends around the sides and back of the drier. rim, preferably formed of cast metal, is provided also with the channel df, vin which tits the upper edge of the base A, and with the channel d?, in which rests the bottom of the hopper E. The inclined sides and lback of the rim D are furnished with discharge-perforations d, and with the square discliarge-openings d4, which are closed by the perforated gates or slides D, passing through suitable slots formed in the upper edge ofthe rim D, and furnished with handles di for their ready with-- drawal. The rim D is vsecured to the face-- plate by bolts passing through the lugs or ears dfrand constitutes the inclined bottom of the hopper E, which is sustained thereby, the inner walls of this hopper being formed by the inclined sides and back of the dome C. The

front edges of the sides of the hopper are securely bolted, as shown, to the rearwardly-extending iianges b, which are cast upon the back ofthe face-plate B.

From the above-described construction itwill be seen that the dome and hopper are` ing, as shown, the walls of the fire-dome not This IOO

only is the heat of the fuel more directly and economically applied, being compelled to impinge against the Walls, but the banking ot' the sand is also eftectually prevented.

Vhen my improved apparatus is to be used for the purpose of drying gravel, the gravel is placed Wit-hin the'hopper, the gates being in closed position, and allowed to remain there until sufficiently dried or heated. rlhe gates will then be raised and the gravel will be discharged through the large square openings of the rim. 'As in certain classes of Work for which sanddriers are commonly employed it frequently becomes necessary to dry gravel, the advantage of having the discharge-gates must be apparent, and by providing these gates with perforations, as shown, the dry sand will ilow readily through them, and they need only be removed When dried gravel is to be discharged.

It is obvious that my improved drier may be modified Within Wide limits without departing froni the spirit ot' the invention. Thus, for example, hinged doors may be used instead ofthe perforated gates in the bottom of the hopper, and when gravel is to be dried or heated the dome may, if desired, be formed of perforated plates. l do not Wish therefore to be understood as limiting myself to the precise details of construction seti'orth.

Having thus described my invention, what l claim as new, and desire to secure by Lethrs Patent, isq

l.. A sand-drier having a fuel-chamber provided With a dome having inclined sides, a hopper or casing surrounding said dome, and a rim having an inclined perforated face constituting the bottom of said hopper, said rim being formed separate from said hopper and connected thereto, substantially as described.

2. In a sand-drier, the combination of a Ifuel-chamber provided'with a dome having inclined sides, a hopper surrounding said dome, and a grooved rim for supporting said dome and hopper, and having inwardly-inclined perforated sides, substantially as described.

8. ln a sand-drier, the combination, with a fuel-chamber, of a hopper or casing, a bottom for said hopper having large openings for the free discharge ot' gravel, and smaller openings for the discharge of sand, and having gates for said large openings, provided with perforations therein of a size adapted to permit the passage of sand and arrest gravel, substantially as described.

l. A sand-drier embodying in its construe tion a base forming an ash-pit, a grooved rim restingon said base and provided with inclined perforated sides, a dome resting on said grooved rim, a hopper surrounding said dome upon three sides, and a face-plate forming the front ot' the base, the dome, and the hopper, substantially as described.

5. ln a sanddrier, the eombi11atio11,with the base, oit' the fuel-chamber having a dome and the face-plate provided with grooved lugs to receive the edges of said dome, substantially as described.

6. The combination,\vith the base A and inclined dome C and hopper E, of the inclined perforated rim D, having grooves d, d', and d2 to receive, respectively, the edges ofthe base, the dome, and the hopper, all combined and .arranged substantially as described.

XVILLIAM XV. CLARK.

lVitnesses (EoRGlc l. Fisnim, Jr., J. O. Monnrs. 

